diff --git a/library/symbols/tube_penthode.sym b/library/symbols/tube_penthode.sym
new file mode 100644
index 000000000..7649783ed
--- /dev/null
+++ b/library/symbols/tube_penthode.sym
@@ -0,0 +1,29 @@
+<Qucs Schematic 24.2.1>
+<Symbol>
+  <.ID 10 164 SUB>
+  <Line 20 50 0 -20 #000000 1 1>
+  <Line -20 25 0 -5 #000000 1 1>
+  <Line -20 20 40 0 #000000 1 1>
+  <Line 20 20 0 10 #000000 1 1>
+  <Line -25 10 10 0 #000000 1 1>
+  <Line -5 10 10 0 #000000 1 1>
+  <Line 15 10 10 0 #000000 1 1>
+  <Line -25 0 10 0 #000000 1 1>
+  <Line -5 0 10 0 #000000 1 1>
+  <Line 15 0 10 0 #000000 1 1>
+  <Line -25 -10 10 0 #000000 1 1>
+  <Line -5 -10 10 0 #000000 1 1>
+  <Line 15 -10 10 0 #000000 1 1>
+  <Line -30 10 -20 0 #000000 1 1>
+  <Line 30 0 20 0 #000000 1 1>
+  <Line -10 -20 20 0 #000000 1 1>
+  <Line 0 -40 0 20 #000000 1 1>
+  <Ellipse -35 -35 70 70 #000000 1 1 #c0c0c0 1 0>
+  <Line 20 20 8 -5 #000000 1 1>
+  <Line 28 14 0 -24 #000000 1 1>
+  <Line 25 -10 3 0 #000000 1 1>
+  <.PortSym 0 -40 1 0 A>
+  <.PortSym 50 0 2 0 S>
+  <.PortSym -50 10 3 0 G>
+  <.PortSym 20 50 4 0 K>
+</Symbol>
diff --git a/library/symbols/tube_triode.sym b/library/symbols/tube_triode.sym
new file mode 100644
index 000000000..361f3e461
--- /dev/null
+++ b/library/symbols/tube_triode.sym
@@ -0,0 +1,18 @@
+<Qucs Schematic 24.2.1>
+<Symbol>
+  <.ID 10 164 SUB>
+  <Line 20 50 0 -20 #000000 1 1>
+  <Line -20 25 0 -5 #000000 1 1>
+  <Line -20 20 40 0 #000000 1 1>
+  <Line 20 20 0 10 #000000 1 1>
+  <Line -25 0 10 0 #000000 1 1>
+  <Line -5 0 10 0 #000000 1 1>
+  <Line 15 0 10 0 #000000 1 1>
+  <Line -10 -20 20 0 #000000 1 1>
+  <Line 0 -40 0 20 #000000 1 1>
+  <Ellipse -35 -35 70 70 #000000 1 1 #c0c0c0 1 0>
+  <.PortSym 0 -40 1 0 A>
+  <.PortSym 20 50 3 0 K>
+  <Line -30 0 -20 0 #000000 1 1>
+  <.PortSym -50 0 2 0 G>
+</Symbol>